Disiribntioxi 



ectendoirophio 



Distriba'tion {distributio, divlBion), 

 the partition of plants over the 

 world according to their needs of 

 growth, temperature, soils, and 

 aspects. 



Distroph'ophyteg, pi. (-{-Tropho- 

 PHY PES), plants of firm soil with full 

 proportion of moisture (Gadeceau) ; 

 ditrip'Ioid (4- triploid), applied to 

 Rumex Acetosella Linn., with a 

 single pair of sex chromosomes and 

 another pair transitional between 

 sex-chromosomes and autosomes 

 (Gates). 



Divul'sion {divulsv^f torn asunder), 

 diruption. 



dizy'gons, {^vyos^ a yoke) depen- 

 dent on two rows of chromosomes 

 (Frost). 



dodek'asome = dodecaploid (Blakes- 

 lee). 



Dom'inance, preponderance in surface 

 occupied; Dom'inants, add, (4) 

 genera which have persisted through 

 geologic times to the present 

 (Clements). 



Donb'le Reeip'rocal, hybrid obtained 

 from reciprocally crossing two 

 previously crossed hybrids (De 

 Vries) ; cf. Reciprocal Hybrid; ~ 

 Boots, when lateral roots of mono- 

 cotyledone occur in the intennal 

 between two protoxylem bundles 

 (Jeffrey). 



dros'ophUe (Spoao?, dew; ^lAco), I 

 love), fertilized by dew (Errera). 



Dryade'tnm, an association of Dryas 

 Linn. 



Dry'mophytes (Spuftos-, coppice; <i>viov^ 

 a plant), bushes and small trees, 

 chaparral and woodland (Clements); 

 Dry'on, scrub climax {id.). 



Dryophant'in (<f>avad^oi, to appear), a 

 pathologic colouring-matter from 

 galls produced by Dryofhanie 

 diviaa Adler, on leaves of British 

 oaks. 



dryop'terid, like the fern Dryopteris 

 Adans. 



duodec'uple, twelve sets of chromo- 

 somes affected (Blakeslee). 



du'plex, two dominant factors (Blakes- 

 lee). 



Dnrilrutice'ta, pi. associations of 

 Macchia and Gabrigites ; Dnri- 

 ligno'sa, pi. {lignosus, woody), 

 hard- wood plants ; Dnripra'ta, pi. 

 {pratuntf a meadow), pasturage ; 

 Dnrisil'vae, woods of firm-leaved 

 trees. 



Dynamic Beha'vioar, the part played 

 by the species in the development 

 of the community. 



dys'ploid, non-multiploid variatioli in 

 the number of chromosomes, as 

 Carex Linn. ; Dysploi'dy is the con- 

 dition (Jeffrey) ; Dysteleolog'ne, 

 H. Mueller's term for Dysteleo- 

 LooiST ; dystrop'ic, Loew = dy- 

 stropous. 



ece'sic, relating to Ecksis ; ec'ize, to 

 colonize. 



ecIec'teoB (cVAe/rreo?, to be chosen 

 out), selected. 



Ecodichog'amy (+ Dichogamy), 



monoecious asynchronism in fer- 

 tilization; Ec'ograph (ypa^«u, I 

 write), an instrument to measure 

 the physical factors of a station or 

 habitat (Clements) ; Ecorogy, the 

 modem spelling for the original 

 Oecoloqy; regulated by biot'ic, 

 climat'ic, edaph'ic, and orograph'io 

 factors ; Ec'ophene {(fxuvoj, I 

 appear), the reaction of Ecotype 

 to extreme habitat factor (Tures- 

 son); Ecoproteran'dry (4- Pbo- 

 terandry), staminal flowers 

 maturing before the pistillate (Del- 

 pino) ; Ecoproterog'yny ( -f Pbo- 

 teroqyny), pistillate flowers matur- 

 ing before the staminate (Delpino) ; 

 Ecospe'cies (+ Species), a species 

 modified to fit its locality (Turesson) ; 

 Ec'otype {rvnos, type), a habitat 

 type of plant, a sub-unit of the 

 EcosPECiES resulting to conditions 

 of environment; adj. ecotyplcal. 



ectendotroph'ic (ec-, endotrophic), 

 combined type of parasitism, in- 

 ward and outward (MeUn) ; inter- 

 mediate intercellular infection in 

 cortical tissues of mycorrhiza 

 (RajTier). 



434 



